ARD online application service refers to the information of data that can be directly used for remote sensing application analysis after orthophoto and atmospheric correction on the basis of standard sensor corrected images, and provides online direct reference through API. ARD data is provided externally in the form of datasets. Users can retrieve and view data sets that can be analyzed by online applications and their data indicators, and refer to them online through specific API. ARD data service mainly solves the needs of users for online and real-time drawing.